Brake shoe



March I; 1932.

V. BENDlX BRAKE SHOE Filed Sept. 21, 1928 IN VEN TOR.

Vincent fizhdix'r A TTORNEY:

- Patented Marc 1, 1932 STATES PATENT OFFICE VINCENT IBENDIX, OF CHICAGO, ILLINOIS, ASSIGNOR T IBENDIX BRAKE COMPANY, 015

r SOUTH BEND, INDIANA, A CORPORATION OF ILLINOIS BRAKE SHOE Application filed September 21, 1928.

, is ordinarily riveted thereto.

The principal object of my invention is to supplement the rivet or other conventional securing means for the lining novelly arranged depressions in the rim, which depression are preferably shallow but relatively large area. The lining, during the initial brake application, readily molds itself into these depressions, which structure thereafter aids in securing the lining to the rim of the shoe, obviating relative creeping between the parts.

A further object of my invention relates a novel method of securing a lining material of initial uniform crosssection to the rim or outer surface of a friction element. This I accomplish by preforming the element and thereafter press, by any suitable means, the lining into said depressions.

Further objects and features of my invention, lncluding Various combinations of parts and desirable particular constructions will be apparent from the following description of the illustrative embodiments shown in the accompanying drawings, in which:

igure l'is a perspective view of mynove'l rim and lining arrangement shown as applied to a shoe of the double web type;

Figure 2 is a similar view disclosing the invention, slightly modified, and applied to a single web shoe; I

Figure .3 is a sectional View of Figure 2 indicating more clearly the rim depressions for accommodating the lining and with spaced reinforcing 14 extending substantially at right angles Figure 4 is a section corresponding to Figure 3, but showing the akes'hoe provided ]0 denotes the I rim; of a web portions 12 and thereto.

At predetermined spaced intervals along by utilizing" 1 tion, a rim portion provided shoe of Figure 1.' In the embodiment illustrated in Figure 1,

' In use.

Serial No. 307,490,

each side edgewf the shoe I prefer to provide relatively shallow depressions 16 of substantially rectangular outline, the same being of substantial area. I further suggest that the depressions of each row be staggered with respect to each other as clearly indicated in Figure The depressions referred to may be mere indentations in the rim, the under surface of the same to be smooth, however I prefer that the depressions be formed by pressing 'or embossing the rim locally to press the metal thereof inwardly, thus forming corresponding projections onthe undersurface. Such depressions are admirably suited for the purpose indicated, namely that of supplementing the rivet securing means for the lining in retaining the lining on the rim.

As indicated inFigure 2, I may adopt my invention to a shoe in which case there is prefera ly provided but a single row of depressions, located substantially in the center of the rim.-

The lining when first applied to the rim is of uniform cross" few brake applications is quickly depressed locally in the spaced depressions, being readily molded to shape itself to the rim contour. The lining may, however, be pressed prior to assembly of the brake into said depressions. The' deleterious effect of relative movement between the lining and rim, that is its tendency to creep thereon, is thus obviated by my invention, the function of the rivets being thereby supplemented.

While but two embodiments of my invention have been disclosed in detail, it is not my intention to be limited thereby but only as far as is-indicated' by the scope of the appended claims.

I claim:

1. A brake shoe comprising, in combinawith depressions therein, together with a friction material covering said rim and so constituted as of'the single web type section but with the first to readily adaptitself tozsaididep'ressions in I said rim, said depressions being independent of the lining fastenings and the llning being adapted to imbed itself in said depressions 2. A brake shoe provided with a rim and spaced reinforcing webs extending at an angle thereto; said rim being formed with rows of spaced relatively shallow depres- 6 sions on said webs, the depressions in one row being staggered with respect to those in the other row.

In testimony whereof I have hereunto signed my name. I m VINCENT BENDIX.

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